In a clean sport, training and natural ability are the determining factors in winning, and PEDs are the unfair advantage.
In a dirty sport (assuming all top contenders are using PEDs), it goes back to training and genetics to gain the "edge".
What does it take to win 7 tours in a row?
Just a massive doping program that appears to be supported by the sports own governing body (UCI).
I drank deep from the LA kool-aid pitcher, but damn, you're a ****ing liar, Lance.
If it sounds too good to be true, more than likely it is.